LMRT Core Review questions with answers
As a professional radiographer, the practice of ALARA requires you to - CORRECT
ANSWERS ✔✔restrict the XR beam to the clinical area of interest
The factors that affect XR emission under the direct control of the radiographer are
called_ factors - CORRECT ANSWERS ✔✔prime
Milliamperage-second (mAs) directly affects all of the following EXCEPT -
CORRECT ANSWERS ✔✔beam quality
The factors that directly affect XR quantity are - CORRECT ANSWERS ✔✔mA &
filtration
The factors that directly affect XR quality are - CORRECT ANSWERS ✔✔kVp &
beam filtration
If 1 coulomb is equal to 6.3 x 10(18) electron charges, how many electrons flow from
cathode to anode 1 second - CORRECT ANSWERS ✔✔6.3 x 10(18)
If 1 ampere equals a flow of 6.3 x 10(18) electrons per second, how many electrons
flow from cathode to anode in 1 milliampere? - CORRECT ANSWERS ✔✔6.3 x
10(15)
As the mA doubles, the number of electrons flowing from cathode to anode -
CORRECT ANSWERS ✔✔increase 2-fold
, The product of tube current 7 exposure time is equal to - CORRECT ANSWERS
✔✔XR beam quantity
In order to increase radiographic film density by 40% the radiographer would -
CORRECT ANSWERS ✔✔change the mAs from 15-21 mAs
The relationship between mAs & exposure is - CORRECT ANSWERS ✔✔directly
proportional
The reaction of a photographic film to light is equal to the product of the intensity of
the light and the duration of the light exposure. - CORRECT ANSWERS ✔✔the
reciprocity law
Increasing the kVp for an exposure will - CORRECT ANSWERS ✔✔cause the
electrons to travel faster from cathode to anode
Increasing the energy of an incident electron will result in the production of an XR
photon with - CORRECT ANSWERS ✔✔greater energy
Kilovoltage is the primary controlling factor of - CORRECT ANSWERS
✔✔radiographic film density
Adjustments in kVp should be used to control radiographic - CORRECT ANSWERS
✔✔contrast
XR beam penetrability is primarily controlled by - CORRECT ANSWERS ✔✔kVp
As a professional radiographer, the practice of ALARA requires you to - CORRECT
ANSWERS ✔✔restrict the XR beam to the clinical area of interest
The factors that affect XR emission under the direct control of the radiographer are
called_ factors - CORRECT ANSWERS ✔✔prime
Milliamperage-second (mAs) directly affects all of the following EXCEPT -
CORRECT ANSWERS ✔✔beam quality
The factors that directly affect XR quantity are - CORRECT ANSWERS ✔✔mA &
filtration
The factors that directly affect XR quality are - CORRECT ANSWERS ✔✔kVp &
beam filtration
If 1 coulomb is equal to 6.3 x 10(18) electron charges, how many electrons flow from
cathode to anode 1 second - CORRECT ANSWERS ✔✔6.3 x 10(18)
If 1 ampere equals a flow of 6.3 x 10(18) electrons per second, how many electrons
flow from cathode to anode in 1 milliampere? - CORRECT ANSWERS ✔✔6.3 x
10(15)
As the mA doubles, the number of electrons flowing from cathode to anode -
CORRECT ANSWERS ✔✔increase 2-fold
, The product of tube current 7 exposure time is equal to - CORRECT ANSWERS
✔✔XR beam quantity
In order to increase radiographic film density by 40% the radiographer would -
CORRECT ANSWERS ✔✔change the mAs from 15-21 mAs
The relationship between mAs & exposure is - CORRECT ANSWERS ✔✔directly
proportional
The reaction of a photographic film to light is equal to the product of the intensity of
the light and the duration of the light exposure. - CORRECT ANSWERS ✔✔the
reciprocity law
Increasing the kVp for an exposure will - CORRECT ANSWERS ✔✔cause the
electrons to travel faster from cathode to anode
Increasing the energy of an incident electron will result in the production of an XR
photon with - CORRECT ANSWERS ✔✔greater energy
Kilovoltage is the primary controlling factor of - CORRECT ANSWERS
✔✔radiographic film density
Adjustments in kVp should be used to control radiographic - CORRECT ANSWERS
✔✔contrast
XR beam penetrability is primarily controlled by - CORRECT ANSWERS ✔✔kVp
